Storage-chamber stuffing-box.



E'. A. BAILEY & B. LONG. STORAGE CHAMBER STUPFIHG'BOX. APPLIOATION FILED MAR. S, 1909.

934,289, Patented Sept. 14, 1909.

l n W WAP/'14% in*ni-rizo STATES PATENT OFFICE,

FRED A. DAILEY, F ST. PAUL, .AND BRNEY LONG, OF MINNEAPOLIS, MINNESOTA, ASSIGNORS TO PLUNGER PLASTIC PACKING COMPANY, OF ST. PAUL, MINNESOTA', y

A CORPORATION or MINNESOTA.'

STORAGE-CHAMBER sTUFFrNG-Box.

Application vled March 31, i909. Serial No. 486,882.

' soy and State ot lliinnesota., and Minneapolis, in .the county of Hennepin and State of Minnesota," respectively, have invented certain new and useful Improvements in Storage-(Vhauiber Stuii'ing-Boxes, of -Which the following is a specification.

'Uur invention relates to improvements in storage chamber stuiling boxes, and has for its object to provide a stuffing box having a communicating chamberfor the ster-age and supply oli packing otthe general character disclosed in United States Letters Patent No. 584,318 issued to us on April 7, 1908, wherein the stora chamber can be shut oft' from communication with the stuiiing box, whenl desired, so as to close it to the entry of steam from the stutling box and thereby enable it to be conveniently refilled with packing without stopping the engine orshutting ott the steam.

Tothat end the invention consists in the construction, combination and arrangement of parts herein shown and described.

In the 'accompanying drawings forming part of this specification, Figure 1 is an end View of a stutling box, partly broken away, embodying the invention; Fig. 2 is a vertical longitudinal section through the same on line :r-w of Fig.v 1; Fig. 3 is a perspective detail ofa fragment of the upper end of the boss upon the outer section of the stuffing box; Fig. 4 is a perspective view lot a 'trag-K mentl of the storage chamber, and Fig. 5 is a plan view ofthe Spanner-nut about the storage chamber.

`In the embodiment` ot' the invention shown in the drawings, which is particularly applicable to a throttle rod stuffing box, the stuiing box is constructed in two sections, an inner or main section A which can be secured to the boiler head or cylinder head in any suitable Way, and an outer section B removably secured against the main section in any convenientway, a tight joint being obs,

fz Vtained by means of the copper gasket` 2.v 5o. A. l

' vided witfa Iateriilboss 3. 'This boss isl uhu socket 13 within- The outer section of thestuihng boxlfis profofmeatmih. nel.

extending storage chamber 6. The storage exterior annular langc 8, and is secured spanner nut 4, which has screw threaded ensocket and can be screwed down about the storage chamber above the flange 8, thus movement4 While at ,the same time permitting itto be rotated.

The boss is formed with an opening or port 5, preferably semicircular in cross section opening or port "9 which registers with the to the necessary extent. To stop the further rotation ot the chamber when it has been turned to bring the port 9 into or out of registration with the port 5, a pin and groove connection is provided between the chamber and boss. vlAs here shown, the chamber is formed in its bottom with a semicircular groove 10 around the closed portion thereof, while the boss is formed near one end of the port 5 with a pin 11 which works in the registration, and against the o posite end wall when the portsI are entire y shut off from registration.

The storage chamber is interiorly threaded to receive the screw ram or plunger 7 which works within it. The chamber is'constructed to receive and hold a supply of plastic packing, which can be forced into the stuing box from time to time, as required, by screw: ing down the ram 7. The ram is made, preferably, with anhupwardly coned or concave bottom face in order the, better to grasp the packing. To refill the storage chamber without stopping the engine, the chamber is first turned in the boss to carry the port 9 out of registration with the port 5, thereby closing communication between the-chamber and stuffing box and shutting olf the steam Yfrom the chamber.l T he.v ram is then reinovech and a supply of packing inserted .thechamber The ram is then replaced asf=.'

chamber is formed at the bottom with auf gagement with the inner side wall ot the groove 10 and abats against one ot' the end` walls 12 thereof when the ports are 1n full Speeioation of Letters Patent. Patented Sept. 14, 1909. 'i 'y which is rotatably supported the outwardlyy 'i within 'the boss by means of yanfamnilar holding lthe chamber from 4longiturlinall l' leading from the socket 13 into the stuiiingbox proper, while the storage chami' bei' is formed at the bottom with an outlet'y port 5 when the storage .chambervis turned chamber and to exert positive and inelastic y said port.

pressure 'upon the packing within the same, and means for closing communication between thev chamber and stuffing box.

2. The combination,` with a stuing' box having-an inlet port, of a packing stioravev chambei' movably supported upon the stu ing box and constructed andai-ranged to be moved int i and outot.' communication `with 3. The combination7V with a stutiii'lg box having an inlet*V port, of a packing storage chamber rotatably supported upon ,the stuing box and` constructed and arranged to be turned into and out of -coininunicatioi'i` with said port.'

4. The combination, with a stuiingpbox, of a chamber supported thereon for the stor- `age and supply of plastic packing, the chamber 'and stuiing box having communicating openings constructed to permit the passage of plastic packing from the storage chamber to the stuiling box, a ram having screw engagement .with the inner side of the chambeiI wall, and adapted, when screwed down, to exert positive and unyielding pressure" upon-'the-packing within the chamber and force it into the stuffing box, and means for closingcommunication between and stulingI box.

5. The combination7 withl a stutling box having an exterior socket, o'f'a storage chainber rlotatively supported in thesocket, means holding ,the chamber from longitudinal movement in' the socket while permitting rotative-'movenient thereofyand a screw operated ram Working within the chamber, the chamber and Astulinff box wall having` openings in position to be brought into and out of registration with each other as the chain- `ber is turned.

6. The combination, with a stuiling box', of a chamber arranged m fonnectiontherewith for'the' storage and supply of plastic the chamber v` packing, the chamber and stuffing box hav' ing communicating openings constructed toV permit the passage of packing in plastic condition froni the storage chamber to the stuifing box, a screw ram adaptedlo be progressively, advanced 'within the c hanbei' so as toforce the packingr therefrom into the stufingbox and means for closing c'ommun-i- 'l 65y cation between the chamber and stuin'g box.

In testimon whereof we aflix our siffna- Y e tures in presence of l two witnesses. FRED A.. BAILEY. A BARNEY LONG. Witnesses:

ARTHUR P. LO'rHRoP, 

